Try using the choke to see if that helps. If it does then richen your carbs
slightly, if it makes it worse, lean out the carbs slightly going a 1/4 turn
at a time.
I think you may be running rich or your air cleaner/gasket may be blocking
the vacuum castings in the carb. Make sure the gaskets are the correct ones.
Clean air filter?
Mike
----- Original Message -----
From: "Teesun68" <teesun68@telus.net>
To: "Roadster List" <datsun-roadsters@autox.team.net>
Sent: Saturday, August 31, 2002 7:03 AM
Subject: Fw: carb adjustment
> Datsunmike,
> Thanks for the clean instructions on the balancing for us newbies.
I've
> been playing with a similar issue that Mike has had. I do not have colour
> tune , so I did the old "lift the carb cylinder abut 1/16"th" and watch
the
> RPM routine. I go things set up OK ( I thought) until I put the air
cleaner
> cover back on - bleah....it puked. Would not hold idle, tough to start,
have
> to keep the gas pedal depressed. it almost feels like it is choked on air,
> but that is just a "feel".
> So....has anyone run across the similar issue? Pre air filter set up
is
> reasonable, once filter goes on ( in my case it started right after the
> first cover piece got screwed onto the carb bodies) it all goes to pot?
Any
> ideas/thoughts are appreciated - even the wacky ones!!
> As you can tell by the time stamp on the e-mail - 'tis wacky hour!!! Our 5
> week old has been let's say somewhat unhappy over the last 2 hours, so
this
> is a very welcomed distraction from 85dB plus input I have been getting
from
> him....:):)
>
> Cheers...Michael
> Unbalanced - '69 1600
> ----- Original Message -----
> From: "datsunmike" <datsunmike@nyc.rr.com>
> To: "Mike" <datsun_sports@hotmail.com>
> Cc: "Datsun Roadster List" <datsun-roadsters@autox.team.net>
> Sent: August 30, 2002 5:20 PM
> Subject: Re: carb adjustment
>
>
> > Stop and start all over again now:
> >
> > 1. Disconnect the linkage to each of the carbs and loosen the nuts on
> each
> > linkage.
> >
> > 2. Adjust each carb w/ the unisyn and get them evenly balanced to each
> > other at the rpm you want to idle at.
> >
> > 3. Use your colortune to adjust the mixtures now as the idle speed can
> > change if either carb is rich or lean. If it changes perform step 2
again.
> >
> > 4. reattach the linkages to each carb. If the idle speed increases
then
> > loosen the linkage on the offending carb or if need be both of them.
> Leave
> > the nuts loose.
> >
> > 5. Now use the screw which adjusts the linkage bar which the throttle
> > cable attaches to, and start tightening it and bring up the rpms to
about
> > 1500 - 2000.
> >
> > 6. Adjust your unisyn and take a reading and if the carbs are unequal
> then
> > adjust to make them = by adjusting the linkages either looser or
tighter.
> > Leave the nuts finger tight.
> >
> > 7. Loosen the screw and bring the rpms down to idle speed. If the idle
> > speed has changed then loosen the nuts and loosen both linkages and
repeat
> > steps 5 & 6 until you get it right.
> >
> > 8. When everything is as it should be tighten the nuts carefully.
> >
> > 9. You're done
> >
> > This sounds long and tedious but after a few years you'll get the hang
of
> it
> > and do it quickly. Fortunately once they're set up correctly rarely will
> you
> > have to do it again for a long time.
> >
> > Mike
> >
> >
> > ----- Original Message -----
> > From: "Mike" <datsun_sports@hotmail.com>
> > To: "Datsun Forum" <datsun-roadsters@autox.team.net>
> > Sent: Friday, August 30, 2002 6:29 PM
> > Subject: carb adjustment
> >
> >
> > > hi,
> > >
> > > well I have given up for today. I cant seem to get it set right.
getting
> > the
> > > carbs to suck the same is no problem but I cant seem to get the idle
> below
> > > 1400 without the car shaking apart. I checked the timing and it looks
> > good.
> > > I took it out for a spin anyway and it will not move out at all. I
could
> > not
> > > get it over 3000 rpms either. good news is the brakes feel allot
better
> > not
> > > that I needed them to stop! hehehehe
> > >
> > > mike in las vegas
> > >
> > > /// datsun-roadsters@autox.team.net mailing list
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> >
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>
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